package cn.gjculture.shopping.api.controller;

import cn.gjculture.shopping.api.dao.PicTxtMessageDao;
import cn.gjculture.shopping.api.entity.wx.PicTxtMessage;
import cn.gjculture.shopping.api.service.WXService;
import com.alibaba.fastjson.JSONObject;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.ApplicationContext;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;

import javax.websocket.*;
import javax.websocket.server.PathParam;
import javax.websocket.server.ServerEndpoint;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.CopyOnWriteArraySet;

@Slf4j
@Component
@ServerEndpoint(value = "/websocket/sendMessage/{id}")
public class SendMessageController {

    private static ApplicationContext applicationContext;

    public static void setApplicationContext(ApplicationContext applicationContext) {
        SendMessageController.applicationContext = applicationContext;
    }

    PicTxtMessageDao picTxtMessageDao;

    WXService wxService;


    //静态变量，用来记录当前在线连接数。应该把它设计成线程安全的。
    private static int onlineCount = 0;
    //concurrent包的线程安全Set，用来存放每个客户端对应的MyWebSocket对象。
    private static CopyOnWriteArraySet<SendMessageController> webSocketSet = new CopyOnWriteArraySet<>();

    //与某个客户端的连接会话，需要通过它来给客户端发送数据
    private Session session;

    /**
     * 连接建立成功调用的方法
     */
    @OnOpen
    public void onOpen(@PathParam(value = "id") String id, Session session) {
        this.session = session;
        webSocketSet.add(this);     //加入set中
        addOnlineCount();           //在线数加1
        log.info("有新连接加入！当前在线人数为" + getOnlineCount());
        log.info("Need send message Id:{}", id);
        handle(id);
    }

    private void handle(String id) {
        picTxtMessageDao = applicationContext.getBean(PicTxtMessageDao.class);
        wxService = applicationContext.getBean(WXService.class);
        try {
            String accessToken = wxService.getAccessToken();
            List<String> openIds=wxService.getAllOpenId(accessToken);
            PicTxtMessage message = picTxtMessageDao.queryById(id);
            if (CollectionUtils.isEmpty(openIds) || message == null) return;
            int unit = openIds.size() / 100;
            JSONObject json=new JSONObject();
            json.put("total",openIds.size());
            json.put("value",0);
            sendMessage(json.toJSONString());
            if(unit==0){
                json.put("value",20);
                sendMessage(json.toJSONString());
            }
            int success=0;
            int loser=0;
            for (int i = 0; i <openIds.size(); i++) {
                String openId = openIds.get(i);
                accessToken = wxService.getAccessToken();
                log.info("send message to openid:{}",openId);
                boolean is=wxService.sendPicTxtMessage(openId, message, accessToken);
                if(is){
                    success++;
                }else {
                    loser++;
                }
                json.put("success",success);
                json.put("loser",loser);
                sendMessage(json.toJSONString());
                if (i > unit && unit>0 && i % unit == 0){
                    json.put("value",i / unit);
                    sendMessage(json.toJSONString());
                }
            }
            json.put("value",100);
            sendMessage(json.toJSONString());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }


    /**
     * 连接关闭调用的方法
     */
    @OnClose
    public void onClose() {
        webSocketSet.remove(this);  //从set中删除
        subOnlineCount();           //在线数减1
        log.info("有一连接关闭！当前在线人数为" + getOnlineCount());
    }

    /**
     * 收到客户端消息后调用的方法
     *
     * @param message 客户端发送过来的消息
     */
    @OnMessage
    public void onMessage(String message, Session session) {
        log.info("来自客户端的消息:" + message);

        //群发消息
        for (SendMessageController item : webSocketSet) {
            try {
                item.sendMessage(message);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * @param session
     * @param error
     */
    @OnError
    public void onError(Session session, Throwable error) {
        log.error("发生错误");
        error.printStackTrace();
    }


    public void sendMessage(String message) throws IOException {
        this.session.getBasicRemote().sendText(message);
    }


    /**
     * 群发自定义消息
     */
    public static void sendInfo(String message) throws IOException {
        log.info(message);
        for (SendMessageController item : webSocketSet) {
            try {
                item.sendMessage(message);
            } catch (IOException e) {
                continue;
            }
        }
    }

    public static synchronized int getOnlineCount() {
        return onlineCount;
    }

    public static synchronized void addOnlineCount() {
        SendMessageController.onlineCount++;
    }

    public static synchronized void subOnlineCount() {
        SendMessageController.onlineCount--;
    }


}
